BioShock
We tested BioShock by manually playing through a specific point in the game five times while recording frame rates using the FRAPS utility. The sequence? Me trying to fight a Big Daddy, or more properly, me trying not to die for 60 seconds at a pop.

This method has the advantage of simulating real gameplay quite closely, but it comes at the expense of precise repeatability. We believe five sample sessions are sufficient to get reasonably consistent results. In addition to average frame rates, we've included the low frame rates, because those tend to reflect the user experience in performance-critical situations. In order to diminish the effect of outliers, we've reported the median of the five low frame rates we encountered.

For this test, we largely used BioShock's default image quality settings for DirectX 10 graphics cards, but again, we tested at a relatively low resolution of 1024x768 in order to prevent the GPU from becoming the main limiter of performance.

The QX9650 take the top spot again, though not by much. Any of the Core 2 processors here can run BioShock more or less optimally, obviously. And while playing, I didn't notice any real slowdowns or problems, even on the Athlon 64 X2 5600+.

Supreme Commander
We tested performance using Supreme Commander's built-in benchmark, which plays back a test game and reports detailed performance results afterward. We launched the benchmark by running the game with the "/map perftest" option. We tested at 1024x768 resolution with the game's fidelity presets set to "High."

Supreme Commander's built-in benchmark breaks down its results into several major categories: running the game's simulation, rendering the game's graphics, and a composite score that's simply comprised of the other two. The performance test also reports good ol' frame rates, so we've included those, as well.

We've had a heck of a time trying to tease out big performance differences between CPUs in this game. They don't come easily and obviously aren't very large. However, the QX9650 again sits atop the field, this time in each of Supreme Commander's several performance measurements.